|
Depends on what you want to do. Usually they have a large aperture f/2 or brighter. This allows steady camera shots for a couple of seconds. Do you have a Fullframe or an APS-C camera ? In the latter case the FOV is 24º (long side) and max. exposure time to prevent trails 10 sec. In the Fullframe case the FOV is 40º and max exposure is 16 sec.
Using 1600 ASA yields nice shots particularly if you stack them and get stars of mag 7-8 on the picture.
It is considered as 'standard lens' but this is only partially true.
For Fullframe (which was the only option in the time of film rolls) is is rather close to the standard perspective as we see it with our eyes, but in APS-C it is slightly telephoto: 80mm for APS-C or 75mm for APS-N(ikon).
|